Curious to hear any feedback about this.
I have a reference GTX 660 Ti overclocked to about 1163 MHz boost on a system with a 4770k @ 4.1 GHz, and another system with a 4690 (non-k) and a GTX 750 Ti with the boost clock hitting 1345 MHz. Both PCs have the latest version of GeForce Experience, and the latest beta driver. Both PCs run Windows 8.1 and version 7.4.4 of the Folding@Home client.
On the 660 Ti while folding on the CPU & GPU, flash video is iffy. If I pause a video, Alt-Tab and come back, the video is jumpy and unwatchable. Sometimes this is the case from the start, without doing anything else. Games are always unplayable, around 10 to 20 FPS. Even playing GZDoom with the Brutal DOOM mod... I can't tolerate the stuttering and will change it to Light or pause it until I'm done gaming.
On the 750 Ti while folding on the CPU & GPU, I feel like maybe I see a dropped frame on YouTube a couple times a minute but I never had to back off the folding. The weird thing is that I can game while folding and it's pretty much as smooth as when I'm not folding. Both with Guild Wars 2 maxed at 1920x1200 and Skyrim with 50ish mods (no ENB) at 1680x1050.
Has anyone else had a similar experience with the Kepler and Maxwell Nvidia GPUs? What's it like on the AMD side? I'm hoping to upgrade the 660 Ti once the newest higher end cards have been released on both sides later this year and this type of scenario will definitely factor in. I can give more details on the setups if needed.